Hi!
We have some problem with slow IIS response when receiving lookup request from a DMZ server. An external part is sending soap-messages, and a windows server application on the DMZ server, do a request to an internal IIS server (a lookup of an id in a database table). All steps use SSL and certificates. The external has timeout set to 10 seconds, and can’t change that.
External part <-|-> DMZ server <-|-> Internal IIS
Internal IIS
The internal IIS 7.5 is running on a Win2008R2std hosted by a VMWarecluster, configured with 4GB RAM. On these installations we have a special application pool for the lookup service, and the Idle Time-out (minutes) is 0.
Problem
Intermittent performance issue on some installations, showing a 15-30 seconds delay before answer. These delays could be in hours, and then disappears. Some customers with same configuration don’t share this problem.
In our logs, and in trace logs, the .net code takes at most a second.
Solving tips wanted
1. Tools toidentifythis behavior. (i.e. where is the problem)2. Appropriatesettings forthis problem, network, server, IIS.
3. Articles describing this.
4. How to get a service call on the issue in sweden.
Regards
Jonas Gunnarsson